Weight Loss Injection Prices

Weight Loss Injection Prices UK

Compare weight loss injection prices in the UK, including Mounjaro and Wegovy, and learn what affects cost between providers and doses.

Whether you are budgeting for a weight-loss injection course or comparing Mounjaro and Wegovy on price, this guide is the top-level pricing landing for weight-loss injections in the UK. It covers what each medicine costs at typical UK providers, NHS access, what affects pricing variation, and how total cost-of-treatment is calculated. For provider-by-provider live data, follow the linked price comparison pages. LetsLoseWeight is an independent comparison site; we do not prescribe medication, and our pricing data is gathered independently from public provider listings.

At-a-glance: typical UK private prices

As a rough range at the time of this guide's last review, monthly private prices in the UK are:

Medicine Starter doses Mid doses Maintenance / max dose
Mounjaro (tirzepatide) £130–£190 (2.5mg) £160–£260 (5–10mg) £200–£300+ (12.5–15mg)
Wegovy (semaglutide) £130–£170 (0.25–0.5mg) £180–£240 (1–1.7mg) £230–£300+ (2.4mg)
Retatrutide Not licensed in UK — no legitimate price exists

These are list prices for a single 4-week pen at typical UK pharmacies. Discounts, multi-month bundles, and first-order promotions can bring effective prices lower at individual providers.

For provider-by-provider live data:

For lowest-price options:

Annual cost of treatment

For someone on a typical maintenance regimen at average pricing, the annual cost roughly works out to:

  • Mounjaro 12.5mg long-term: 3 × ~£170 (titration) + 9 × ~£260 (maintenance) ≈ £2,850 per year
  • Wegovy 2.4mg long-term: 4 × ~£170 (titration) + 8 × ~£260 (maintenance) ≈ £2,760 per year
  • NHS Mounjaro or Wegovy (where eligible): £119 per year (England, ~£9.90 × 12) or £0 elsewhere

The private cost difference between Mounjaro and Wegovy at typical pricing is small — typically less than £100 per year. The private vs NHS difference is substantial — often £2,500–£3,000 per year.

What's the same across all UK providers

Within the regulated UK supply chain, several things are constant regardless of which provider you choose:

  • The medicine itself — manufactured by Eli Lilly (Mounjaro) or Novo Nordisk (Wegovy), with identical formulation
  • The regulatory licence — MHRA-approved, with identical SmPC and patient information leaflet
  • The supply chain — licensed UK wholesalers
  • The black triangle (▼) for additional safety monitoring

What varies between providers:

  • Margin on the medication — wholesale costs and retail margins differ
  • Consultation fees — bundled in for some providers, charged separately for others
  • Delivery costs — usually included for prescriptions; next-day or weekend may surcharge
  • Aftercare — follow-up consultations, dose-change reviews, ongoing support
  • Promotional pricing — first-order discounts, bundles, referral codes change weekly

Why providers price differently

Several factors drive provider-to-provider variation:

Wholesale negotiating power

Larger UK pharmacies with greater purchasing volume can typically negotiate slightly lower wholesale prices, then pass some of that through to retail.

Service model

Online-only providers tend to have lower overheads than high-street chains, often translating to slightly lower retail pricing. High-street providers compete on convenience and integrated healthcare instead.

Aftercare bundling

A provider charging £20 more per month but including free follow-up consultations may be cheaper overall than a provider charging £20 less but billing for each follow-up.

Promotional strategy

Some providers run aggressive first-order discounts, then return to standard pricing from month 2 onwards. The headline "month one" price is not always the long-term price.

NHS pricing — only the prescription charge

For patients eligible for NHS-funded treatment under NICE TA1026 (Mounjaro) or NICE TA875 (Wegovy):

  • England: standard prescription charge of £9.90 (2025/26), or free if you qualify for an exemption (e.g. age, pregnancy, certain medical conditions)
  • Scotland, Wales, Northern Ireland: free at the point of dispensing

NHS access is restricted by criteria that are tighter than the licensed indication. NHS Wegovy is capped at 2 years; NHS Mounjaro is not. Phased NHS rollout means availability varies by area. For the full picture, see our private vs NHS guide.

What "cheapest" really means — total cost over treatment

The cheapest-this-week pen at a single provider is not the cheapest-this-year provider. To compare meaningfully:

  • Look at the dose you'll likely settle on long-term, not the starter dose
  • Look at 6 or 12 months of pricing, not month one
  • Factor in aftercare costs if not bundled
  • Factor in delivery surcharges if you need fast delivery
  • Look at subscription flexibility — some providers require longer commitments

A provider with a steeply discounted starter pen but pricier maintenance often costs more over a full year than a provider with consistent mid-range pricing.

What you should never see

Some pricing patterns are red flags for unregulated supply:

  • Prices dramatically below the regulated UK market — a £40 Mounjaro pen, a £50 Wegovy pen — is a counterfeit-risk signal
  • "No consultation" or "no prescription" needed — unlawful for prescription-only medicines
  • Sale through social media DMs, beauty clinics, "wellness" providers without a named regulated pharmacy partner
  • Cash, bank transfer, or cryptocurrency only as payment options

The MHRA has warned consumers about these risks. Cheaper than market-rate is rarely actually cheaper once safety, counterfeit risk, and lack of clinical safety net are factored in.

How prices change over time

UK weight-loss injection pricing has been broadly stable through 2024–2026 with some downward pressure as more providers enter the market. Specific patterns:

  • First-order discounts are increasingly used as a customer acquisition tool
  • Bundle pricing (3-month, 6-month commitments at lower per-month rates) is more common
  • High-street chains have introduced or expanded their online services, increasing competition
  • NHS rollout of TA1026 has had limited effect on private pricing so far

We update our Mounjaro price comparison and Wegovy price comparison pages as provider pricing changes — those are the places to check for current-week rates rather than this static page.

Frequently asked questions

Are weight-loss injections available cheaper outside the UK?
Even where they may be obtainable in another country, importing prescription medicines into the UK without a prescription is unlawful. Customs may seize parcels. The cost saving is also often illusory once shipping, storage, and counterfeit risk are factored in.

Why is Wegovy slightly cheaper than Mounjaro at some providers?
Wholesale pricing differs between Novo Nordisk (Wegovy) and Eli Lilly (Mounjaro). Providers pass these wholesale differences through with their own margin. The gap varies week to week and provider to provider.

Can I split costs by ordering 3 months at a time?
Many UK pharmacies offer 3-month or 6-month bundle pricing at a discount to monthly. The trade-off is committing money upfront and being less flexible to switch. Worth comparing if your dose is settled.

Will prices come down significantly?
The honest answer is: probably gradually rather than suddenly. New entrants to the market and biosimilar/generic competition over time will create downward pressure, but neither tirzepatide nor semaglutide is close to going generic in the UK. Substantial price drops are unlikely in the near term.

Can I claim weight-loss injections through private medical insurance?
Most UK private medical insurance policies exclude weight-loss medication. Some employer schemes are starting to cover it, particularly where weight-related conditions are part of a broader package. Check your policy directly.

Next steps

Sources

This guide is for general information only. Prices change frequently. Always confirm current pricing with the provider before placing an order.

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Weight Loss Injection Prices UK: Mounjaro, Wegovy | LetsLoseWeight